Our Businesses
Colas Australia
Colas Australia delivers end-to-end road construction, surfacing, and maintenance services through an integrated national network spanning the East Coast and Western Australia. The business provides a comprehensive range of capabilities including asphalt manufacturing and placement, bitumen spraying and sealing, pavement rehabilitation, asset preservation, and specialist infrastructure works across urban, regional, and remote environments.
Supported by a network of fixed and mobile asphalt plants, experienced crews, and high-performance equipment, Colas Australia delivers reliable outcomes for public and private sector clients. Backed by the global Colas network, the business combines strong local delivery with world-class technical capability.
VSA Roads
VSA is a multi-disciplinary road construction, surfacing, and materials group created in 2009 as a joint venture between COLAS Australia and the Bartlett Family operating across Victoria, South Australia, Tasmania, and the Northern Territory. Through its network of local operating businesses, VSA delivers integrated solutions spanning quarry materials, asphalt manufacturing and placement, bitumen spraying and sealing, and linemarking services.
With strong regional businesses supported by the technical expertise, systems, and innovation of the Colas network, VSA combines local agility with national capability. This integrated model enables VSA to deliver efficient, high-quality outcomes for clients across metropolitan, regional, and remote environments.
SAMI Bitumen Technologies
SAMI Bitumen Technologies is one of Australia’s leading suppliers of bitumen and bituminous products, supporting the construction and maintenance of transport infrastructure nationwide. Established in 1978, SAMI is recognised for its technical expertise and leadership in bitumen research, development, and innovation.
SAMI offers a comprehensive range of solutions including conventional and polymer modified binders, crumb rubber modified bitumen, specialised binders, emulsions, and crack sealing products. Operating major bulk bitumen facilities across Australia, SAMI combines national supply capability with advanced laboratory testing. Backed by the global Colas network, the business supports durable and sustainable infrastructure outcomes.
Hutchison Quarries
Hutchison Quarries is a leading supplier of construction materials in Queensland, supporting road construction, civil infrastructure, and maintenance projects across metropolitan and regional markets. The business plays a critical role in enabling safe, durable, and efficient infrastructure delivery.
Hutchison Quarries supplies a wide range of quarry products including aggregates, sands, gravels, and specialised materials for pavement, asphalt, concrete, and drainage applications. Operating a network of strategically located quarries and supported by experienced local teams, the business delivers consistent product quality and responsive service to meet the needs of public and private sector customers.
Dust-A-Side Australia
Dust-A-Side Australia specialises in dust suppression and soil stabilisation solutions for roads, mining, civil construction, and industrial applications across Australia. The business delivers effective treatments that improve safety, asset performance, and environmental outcomes in challenging operating conditions.
Offering a range of proven dust control and stabilisation products, Dust-A-Side Australia supports unsealed roads, construction sites, haul roads, and asset preservation programs. Backed by technical expertise and national delivery capability, the business works closely with clients to deliver tailored, sustainable solutions that enhance asset longevity and reduce environmental impact.